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注意 - 建议使用以下设备作为替代品:

概览

描述

The ISL9519 is a highly integrated narrow VDC system voltage regulator and battery charger controller. Operating parameters are programmable over the System Management Bus (SMBus). The ISL9519 is designed for applications where the system power source is either the battery pack or the output of the regulator/charger. This makes the max voltage to the system equal to the max battery voltage instead of the max adapter voltage. The ISL9519 also includes a patented system to control trickle charging deeply discharged batteries while maintaining system voltage at a user-defined minimum. High efficiency is achieved with a DC/DC synchronous-rectifier buck converter, equipped with diode emulation and variable switching frequency for enhanced light load efficiency and AC-adapter boosting prevention. The ISL9519 can charge one, two or three series-connected Lithium-ion cells, at up to 8A charge current. Default settings for 1-, 2- or 3-cell operation at power-up are selected by an external pin. Integrated MOSFET drivers and bootstrap diode result in fewer components and smaller implementation area. Low offset current-sense amplifiers provide high accuracy. The ISL9519 provides an open drain digital output that indicates the presence of the AC-adapter. The ISL9519 also provides an analog output that indicates the adapter current.

特性

  • ±0.5% System Voltage Accuracy (-10 °C to +100 °C)
  • ±3% Accurate Input Current Limit (-10 °C to +100 °C)
  • ±3% Accurate Battery Charge Current Limit
  • Variable Switching Frequency at Light Load Conditions for Higher Efficiency
  • Fixed Frequency Operation at Higher Loads
  • Fixed Frequency Mode can be Forced by an External Pin
  • Trickle Charge System for Deeply Discharged Batteries
  • Automatic Trickle Charge Current (256mA)
  • Holds Minimum Voltage to System
  • SMBus 2-Wire Serial Interface
  • Default System Voltage Values for 1-Cell, 2-Cell or 3-Cell Operation Selected by an External Pin
  • Adapter In-rush FET Control
  • Adapter Isolation FET Control
  • Battery Short Circuit Protection
  • Fast System-Load Transient Response
  • Monitor Outputs
  • Adapter Current (2.5% Accuracy)
  • AC-adapter Present Indicator
  • 11-Bit Max System Voltage Setting
  • 7-Bit Min System Voltage Setting
  • 6-Bit Charge Current Setting
  • Over 8A Battery Charger Current
  • 6-Bit Adapter Current Setting
  • Over 8A Adapter Current
  • +4.5V to +22V Adapter Voltage Range
  • Pb-Free (RoHS Compliant)

产品对比

应用

  • Notebook Computers
  • Tablet PCs
  • Portable Equipment with Rechargeable Batteries

文档

类型 文档标题 日期
数据手册 登录后下载 PDF 1.34 MB
数据手册 - 精简版 PDF 161 KB
产品变更通告 PDF 169 KB
产品变更通告 PDF 294 KB
产品变更通告 PDF 248 KB
应用笔记 PDF 509 KB
应用笔记 PDF 397 KB
7 items

设计和开发

软件与工具

软件与工具

Software title
Software type
公司
iSim:PE 离线模拟工具
iSim Personal Edition(iSim:PE )可加快设计周期并降低项目早期风险,确定可用于当前和下一代设计的部件。
Simulator 瑞萨电子
1 item

软件下载

类型 文档标题 日期
软件和工具 - 其他 XLS 69 KB
图库 ZIP 163.25 MB
2 items

开发板与套件

模型

ECAD 模块

点击产品选项表中的产品,查找 SamacSys 中的原理图符号、PCB 足迹和 3D CAD 模型。点击产品选项表中的产品,查找 SamacSys 中的原理图符号、PCB 足迹和 3D CAD 模型。
 

Diagram of ECAD Models

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